Solar power, ozone layer (Tonga 1990)

11 April (Tonga ) within release Protect the Environment goes into circulation Stamp Solar power, ozone layer face value 1.20 Tongan pa'anga

Stamp Solar power, ozone layer in catalogues
Stamp Number:	Sn:TO 737

Stamp is square format.

Also in the issue Protect the Environment:

• Stamp - Solar power, ozone layer face value 1.20;
• Stamp - Wave power, ocean pollution face value 32;
• Stamp - Wind power, acid rain face value 57;
• Stamp - Green earth, rain forests face value 2.50;
• Souvenir Sheet - A Green Earth is our Children's Future face value 2.50;